Facing or cutting tool



Apr. 24, 1923;.

194 9. N c SNYDE R FACING OR CUTTING TOOL Filed Sept. 2, 1921 rhpr.lddl, lltlllid.

will a CT-ll'lllftllllll'zl F. SNYDER, 01E PITTSBURGH, PENNSYLVANTA.

Application filed Eleptember To all whom it may concern:

do it known that l, Crmnnns l3. SNYDER,

a citizen of the United States, residing at new and usejlfulTmprovcments in l acing or Cutting Tools, oi which the following is aspecification.

My invention relates to a facing tool for surfacing a joint structure toprovide there on a surface of the kind shown in my Patent No.1,3{l8,-667, dated August 3, 1920, and is for an improvement over thetool shown in my co-pending application {derial lio. 383,- i387, filedMay Q/l, 1920.

p The objects of? the invention are to provide a tool which can rapidlycut the desired surface on the metal, and which will. dig out or cut outa minimum amount of material, and which can be cheaply made and easilysharpened after use.

Tn the accompanying drawings, which illustrate my invention: i

Fig. 1 is a front elevational view of a tool embodying my invention;

lFig. 2 is an elevational view showing the various parts of thecutterstructure before i being assembled i Fig.8 is a section throughthe cutter after being assembled;

llig. l 18 a perspective view of one of the cutter disks;

. Fig. Sis an enlarged perspective view of a portion of the cutting edgeof the disk; and

llig. 6 is an elevational view of a moditied form oi cutter for workingat high speeds on a relatively wide annular sur face.

lteferring to the drawings, and first to the form of cutter shown inFig. 1, it. designates the tool holder, and B the cutter.

The tool holder it comprises a shank 5 ot a suitable shape. its shown inthe drawings, itis of such a shape as to be mounted in the usual toolpost of a lathe or similar machine. One end of the shank is bent at 6and is pro vided with a bifurcated portion 7 providing spaced apartextensions 8. Passingthrough openings in the extensions 8 is a.removable pin or shaft 9 on which the cutter B is rotatably carried.

The cutting or lar in its general construction to the one shown in mycofpending application hereinbetore mentioned. it is termed of endfacing element l8 is simi- 2, 1921. ficrial lilo. 497,813.

clamping plates 10 and 10 having their inner faces formed in such manneras to be undulating or waved. Clamped between the plates 10 and 10 andheld in position by means of rivets 10 or other suitable means extendingtherethrough, is a series of cutting disks 11. i Each ot the cuttingdisks 1.1 is preferably formed from sheet metal, and then so pressed insuch manner as to provide a sinuous or wave-like periphery thereon. Thesinuations on the periphery are gradual, so that it is a relatively longdistance between the crest and the base of any one wave.

Preferably after the disk has been bent, the cutting edge 12 is formedthereon. This is done by first holding one side of the edge of the diskagainst an abrasive wheel and grinding an annular series of small spacedapart hollows therein. The disk is then turned over, and a similarannular series of hollows is formed on the other side of the peripheralportion, but in staggered relation are made when the disk is bent.

Tn .lFig. 5, which shows a very small portionoi the periphery of one ofthe disks on a very much enlarged. scale, the broken line flit-1Tindicates the general sinuous path of the edge 12, while this figureshows how the smaller wavc-like portions are formed on the long ones.

lit will be understood that the waved surfaces of the end members 10 and10, the diameters of which. are less than that of the disks l1,conitmfin substantially to the shape to which the disks are bent. Tnassembling the cutter, the disks are all pre'lierably cousecutivelynumbered and titted together be tween the clamping plates 10 and 10'.The clamping plates and disks, when thus assembled, are heated andpressed so as to insure oi the close fitting of the disks an d theclamping members. They may then be riveted, as shown in lBig.

Wl'ien thus assembled, the cutter B has a series of continuous annular,beveled, sinusoidal cutting edges, each of which sinusoidal cuttingedges has smaller wavelike or sinuous cutting portions thereon.v It maybe mounted in the tool holder A and held against the Work, while thework, such as a pipe flange, is revolved, or it may be revolved againsta stationary piece of Work. In traveling over the work, the cutters diginto the metal, and chop it up without-rew moving any appreciable amountof the metal, and form a granulatedsurtace, as disclosed in my patenthere nbetore referred to. The

-..large and small sinuations cooperate to prevent the individual disksfrom merelymkeeping inthe same track asthe work re- Evolves.

The cutter can be sharpened tromtiine to time by removing the rivets andre -gri-nding the disks. Whenassembled, after sharpening, theyshould beassemblediii accordance i with their numbering, so thatthey iWlll have'theflsame relative positioninithe cutter as.

' they had whenafirst assembledito insure accurate fitting.

In-the construction shown in. .11 1g 6, the

construction is similar tojthat hei einbetore described, but the disksllare of graduated,

sizes so thatthe cutter isconical. This ar- ,oidal periphery providedwith a continuous annulai' sharp beveled cutting edge. ot a rangement isdesirable where it isdesired to have a. relatively w de cutter to engagean,

annular member, suchas a pipe flangqwhcn operating at high speeds.

I claimv as, my invention 1-. Acutterdisk for forming a granulatedsurfaceon metallic .articles,.,having a sinusnature adapted to ,cutintoa metal surface and give it apitted OPgIilDUIEltQCl appearance.

2. A cutter disk for forming agranulated;

surface on metalarticles having a sinusoidal periphery and a continuousannular beveled edge thereon, each s nuationof the the hollows onopposite sides beingstaggered with relation to each other to form smallsinuations therein.

5. A cutter disk for forming a granulatml surface ,on. metal articles,which disk is formed of metal and has a, cuttjng edge formed thereoiiliaving a series of s 'nall .spaced'apart hollows ground on each .sidethereof in such manner as to form small sinuations: therein,;sai(l diskalsobeing bent to make the periphery thereof sinuous.

6. A cutter for form ng a granulated surface on metal articlescomprising a rotatable member having its periphery provided with aseriesofsinuous beveled annular cutting e.z,l,ges,, thesinuations otwhich are relatively long and gradual, said cutting edges also ,havinga. series ot'sinall siiiuationsformed therein which are independent ofthelong gradual sinuations.

7. A cutter for forming a granulated surfaceon metal articles comprisinga series olf bentmetal disks securedtoget her and having continuoussinusoidal peripheries, said peripheries having, spaced apart hollowsformed therein on opposite sides thereof ,which form a. wave-likecutting edge.

In testimony whereof I afiix my signature.

CHARLES F. YDER.

